Microwave Photonic Filters

2019 edition

Daniel Nu├▒o

The Rf transfer function of Phase Modulated Mi- crowave Photonic Filters with a multiwavelength input and a fixed optical stage is analyzed, targeting reconfigurability through wavelength tuning. Optimized optical responses are shown to provide perfect stopband rejection with a 2 laser input, for a specific value of RF bandwidth, and improved rejections when the RF bandwidth is slightly changed. Addition of a third laser is shown to help improve the stopband rejection for non-optimized bandwidths while keeping the optical stage fixed. Experimental results are presented to support the analytical findings.